<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./lib/vue.js"></script>
</head>

<body>
    <div id="app">
        <input type="button" value="获取元素" ref="mybtn" @click="getElement">
        <h3 id="myh3" ref="myh3">今天天气不好!!!</h3>

        <hr>

        <login ref="mylogin"></login>
    </div>

</body>
<script>
    var login = {
        template: '<h1>登录组件</h1>',
        data() {
            return {
                msg: 'son msg'
            }
        },
        methods: {
            show() {
                console.log('调用了子组件');
            }
        }
    }

    var vm = new Vue({
        el: "#app",
        data: {

        },
        methods: {
            getElement() {
                console.log(document.getElementById("myh3").innerText);
                console.log(this.$refs.myh3.innerText);

                console.log(this.$refs.mylogin.msg);
                this.$refs.mylogin.show();

            }
        },
        components: {
            login: login,
        }
    });
</script>

</html>